HP-MPI Version 2.2 for HP-UX Release Note

HP-MPI V2.2 for HP-UX Release Note
Known Problems and Workarounds
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These are kernel threads that are created to deal with page and protection faults
associated with one-copy operations that HP-MPI uses to improve performance. The MPI
processes are effectively single-threaded and there is no impact of the extra threads on
your application. You can ignore these kernel threads during your debugging session.
• Certain compiler options are incompatible with the TotalView debug information.
Use option -notv to exclude incompatible debug information. This option allows the use
of the special compiler options that don’t tolerate debug information. But, this option also
disables TotalView usage on the resulting executable.
The -notv option is only applicable when using archive libraries. Using -notv when
linking with shared libraries is not advised.
• Extended collectives with intercommunicators are not profiled by our lightweight
instrumentation mode.
• High Availability (H/A) mode and the diagnostic library are not allowed at the same time.
• The diagnostic library strict mode is not compatible with some MPI-2 features.